It was a bad decision but we have to move on, says Jack Wilshere

Jack Wilshere today urged his deflated team-mates to forget about their 3-1 defeat by Barcelona and concentrate on the rest of their season, starting with Saturday's FA Cup tie at Manchester United.

The Gunners will have to wait to see if there are any recriminations from last night's exit from the Champions League in the Nou Camp after boss Arsene Wenger clashed with referee Massimo Busacca over the red card that was shown to Robin van Persie. UEFA confirmed they are still waiting for the official's report on the incident.

The Dutch striker received his second yellow card of the night for kicking the ball away after referee had blown his whistle and Wilshere believes the incident was the game's turning point, with the score 1-1 at the time.

"Robin was furious and even I could not hear the whistle," said Wilshere. "We all know it was a bad decision but we have to deal with it and move on.

"It was the wrong decision but that is part and parcel of football. We dealt with it quite well but if there is any team you don't want to go down to 10 men against, it is Barcelona.

"We got a goal back, which was the aim, and were pushing them, then when Robin went off we had to defend and maybe we just ran out of legs."

Fabregas said that he took "full blame" for the result, adding: "[It was] one of the worst moments of my life. I apologise."

But Bacary Sagna, like Wilshere, believes Arsenal can still end the season with their first trophy in six years, even though they now have only the Cup and Premier League to focus on. "We have to be strong because we want to be successful," he said. "We have to fight for the team, for the fans. We want to bring something back to the Emirates.

"Everyone is still confident we can win something. We are ready to fight because we are frustrated after last night. We want to bounce back. It will be another big game on Saturday."